11621352205 has 4 divisors (see below), whose sum is σ = 13945622652. Its totient is φ = 9297081760.

The previous prime is 11621352191. The next prime is 11621352221. The reversal of 11621352205 is 50225312611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50225312611 = 463 ⋅108477997.

It can be written as a sum of positive squares in 2 ways, for example, as 5054356836 + 6566995369 = 71094^2 + 81037^2 .

It is not a de Polignac number, because 11621352205 - 2¹⁹ = 11620827917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1162135216 + ... + 1162135225.

It is an arithmetic number, because the mean of its divisors is an integer number (3486405663).

Almost surely, 2^11621352205 is an apocalyptic number.

It is an amenable number.

11621352205 is a deficient number, since it is larger than the sum of its proper divisors (2324270447).

11621352205 is an equidigital number, since it uses as much as digits as its factorization.

11621352205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2324270446.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 11621352205 its reverse (50225312611), we get a palindrome (61846664816).

The spelling of 11621352205 in words is "eleven billion, six hundred twenty-one million, three hundred fifty-two thousand, two hundred five".